On occasional days the anticyclonic gloom that
was such a feature this year cleared and it was a
joy to be out in the warm sunshine. On a walk
down Afon Clettwr near Tre'r-ddol, I espied this
magnificent hawthorn and set my new ultrawide
lens on it!
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The next three mark the only really convective
day of the whole Autumn, back in late September
or early October. I headed out on an afternoon
intercept, passing the Dysinni valley at just the
right moment to catch a passing shower and the
sun on Craig Yr Aderyn or Bird Rock - home to
numerous cormorants who seem to remember the long
gone days when the sea was much higher (or the
valley had not silted-up). The crag offers some
exciting climbs, particularly due to the rather
unreliable rock!!
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19mm shot of a series of small cumulonimbus
clouds over Cardigan Bay. These are the only
"Cbs" I have seen all Autumn -
extraordinary!
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This telephoto shot was taken as the convection
developed and things really started to close in.
So although there was only one
"chase-day" in Autumn 2007, it produced
a few good things!
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Taking a camera on fishing-trips sometimes pays
off, as in this instance! I had noticed this
Sundog forming and abandoned my rods for the
camera-bag!
Sundogs (scientific name - parhelia) are haloes,
an atmospheric optical phenomenon associated with
the refraction of sunlight by the small ice
crystals that make up cirrus or cirrostratus
clouds. This is an especially vivid one, here
seen through a 19mm lens....
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...here zoomed-in a bit....
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....and here at full telephoto. This is the best
I have ever seen!
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Here's an ultrawide shot of the calm twilight
that followed.
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Great Autumn colours followed in early November,
but photography was limited by further
anticyclonic gloom!
One day it cleared again. Many leaves had fallen
from the trees, but in the valley of the Afon Wen
near Dolgellau I had a bit of an experiment with
direct sunlight, beech trees and thin mist. The
atmosphere was incredible....
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...with crepuscular rays beaming through the
foggy woods...
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Following on from that I took the minor road out
of Dolgellau, first stopping for a series of
shots of the striking profile of Craig-las, a
summit on the ridge that heads out west from
Cadair Idris. The parallel nature of the wooded
hillside and Craig-las behind it immediately
caught my eye....
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...and the sunless crag of Cyfrwy, with the Great
Arete forming the pinnacled ridge. I climbed the
Arete in about 1985 - it's not technically
difficult but the rock needs care in places, and
the exposure is mind-blowing - it's over 250m
from bottom to top! The prominent flat-topped
pinnacle is The Table - a popular venue for large
organised picnics in Victorian times!
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And that was Autumn 2007! The only other thing
that happened was the snowfall that affected a
lot of Eastern Wales on Sunday 18th. Hereabouts
it was restricted to the higher ground - this is
on top of the Machynlleth-Llanidloes road (~500m
ASL) on the following Monday. Drifts to about
30cm demonstrate that this bit of the road is
exposed to the slightest bit of wind from the
east.
The snow occurred partly due to cold air over N
Europe being pulled into the low pressure system
that brought heavy rain to many areas, and also
because evaporative cooling produced an
isothermal layer in the atmosphere - meaning
that, instead of the air becoming warmer closer
to the surface (as is normally the case), it was
cold all the way down - thereby lowering the
snow-level.
Now let's hope for more of interest in the coming
months and an improvement to the update frequency
of the site!!
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